CN113321018A

CN113321018A - Foldable unloading device

Info

Publication number: CN113321018A
Application number: CN202110508307.2A
Authority: CN
Inventors: 朱建强
Original assignee: Zhejiang Libiao Robots Co Ltd
Current assignee: Zhejiang Libiao Robots Co Ltd
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2021-08-31
Anticipated expiration: 2041-05-11
Also published as: CN113321018B; TWI803117B; TW202243982A; WO2022237128A1

Abstract

The invention discloses a foldable unloading device, comprising: the device comprises a rack, a lifting mechanism and a lifting mechanism, wherein the rack is provided with an upper bracket, a lower bracket, a left upright post and a right upright post, and the left upright post and the right upright post can be folded; the upper cross rod is fixed with the upper bracket, an upper sliding block and an upper power driving assembly are fixed on the upper cross rod, and the upper sliding block only moves back and forth along the upper cross rod; the lower cross bar is fixed with the lower support, the lower cross bar is parallel to the upper cross bar, a lower sliding block and a lower power driving assembly are fixed on the lower cross bar, and the lower sliding block only moves back and forth along the lower cross bar; the top of the vertical rod is fixed with the upper sliding block through the upper movable joint, the bottom of the vertical rod is fixed with the lower sliding block through the lower movable joint, a vertical sliding block and a vertical power driving assembly are fixed on the vertical rod, and the vertical sliding block only moves up and down along the vertical rod; the unloading assembly is fixed on the vertical sliding block; and a controller capable of controlling the motors. The invention has the advantages of convenient assembly and disassembly, greatly reduced packaging and transportation cost and long service life.

Description

Foldable unloading device

Technical Field

The invention relates to a discharging device, in particular to a foldable discharging device.

Background

The goods are unloaded on the goods shelf, which is a common unloading mode, in order to improve the unloading efficiency, the goods shelf is generally provided with a plurality of layers, each layer is provided with a plurality of containers, and correspondingly, the unloading device can be realized only by the function of moving and unloading the goods in a three-dimensional direction, therefore, the overall structure of the unloading device has a larger volume, which brings a new technical problem, the packaging, the transportation and the installation are very inconvenient, and the cost is high particularly when the goods are transported for long distance, such as transported to the overseas.

Disclosure of Invention

The present invention addresses the above needs by providing a collapsible unloading device.

The technical scheme of the invention is as follows:

a foldable discharge device comprising:

the foldable rack comprises a rack, a lifting mechanism and a lifting mechanism, wherein the rack is provided with an upper bracket, a lower bracket, at least one left upright and at least one right upright;

the two ends of the upper cross rod are respectively fixed with the upper bracket, an upper sliding block and an upper power driving assembly are fixed on the upper cross rod, and the upper power driving assembly can control the upper sliding block to move back and forth only along the upper cross rod;

the two ends of the lower cross rod are respectively fixed with the lower support, the lower cross rod is arranged in parallel with the upper cross rod, a lower sliding block and a lower power driving assembly are fixed on the lower cross rod, and the lower power driving assembly can control the lower sliding block to move back and forth only along the lower cross rod;

the top of the vertical rod is fixed with the upper sliding block through the upper movable joint, the bottom of the vertical rod is fixed with the lower sliding block through the lower movable joint, the vertical rod is fixedly provided with a vertical sliding block and a vertical power driving assembly, the vertical power driving assembly can control the vertical sliding block to only move up and down along the vertical rod, and the vertical rod can be obliquely arranged after the rack is folded;

the unloading assembly is fixed on the vertical sliding block, can bear the goods at a preset position and can unload the goods at the preset position of a goods shelf on one side of the rack;

and the controller is fixed on the rack and electrically connected with motors in the upper power driving assembly, the lower power driving assembly, the vertical power driving assembly and the unloading assembly.

Further, left side pole setting constitute by the first stock, second stock, third stock and the fourth stock that set gradually, right side pole setting constitute by the fifth stock, sixth stock, seventh stock and the eighth stock that set gradually, two adjacent stocks pass through the freely movable joint and articulate, and every freely movable joint is provided with locking device, this locking device can control the activity of freely movable joint or not move.

Further, after the machine frame is folded, the second long rod and the third long rod can be folded into a parallel closing state, and the sixth long rod and the seventh long rod can be folded into a parallel closing state.

Further, the movable joint comprises:

the locking device comprises two L-shaped plates, wherein one ends of the two L-shaped plates are hinged together, the other ends of the two L-shaped plates are respectively fixed with the two long rods, one end of the locking device is fixed with one long rod, and the other end of the locking device can be fixed with the other long rod through more than two screws only when the two long rods are located at the same straight line position.

Furthermore, the upper cross rod is of a hollow structure, the upper cross rod is provided with an opening end, and two side surfaces of the upper cross rod are provided with grooves;

the upper power drive assembly comprises: the first synchronous belt wheel and the second synchronous belt wheel are respectively and rotatably fixed at two ends in the upper cross rod;

a first timing belt wound around the first timing pulley and the second timing pulley;

the shell of the first motor is fixed with the upper cross rod, the rotating shaft of the first motor is fixed with the central shaft of the first synchronous belt wheel or the second synchronous belt wheel, and the first motor is electrically connected with the controller;

the upper sliding block is provided with a convex block and two sliding rails, the convex block can be embedded into the opening end of the upper cross rod and is fixed with the first synchronous belt, and the sliding rails can only move back and forth along the grooves of the upper cross rod;

the lower cross rod is of a hollow structure and is provided with an opening end, and two side surfaces of the lower cross rod are provided with grooves;

the lower power drive assembly comprises: the third synchronous belt wheel and the fourth synchronous belt wheel are respectively and rotatably fixed at two ends in the lower cross rod;

a second timing belt wound around the third timing pulley and the fourth timing pulley;

the shell of the second motor is fixed with the lower cross bar, the rotating shaft of the second motor is fixed with the central shaft of the third synchronous belt pulley or the fourth synchronous belt pulley, and the second motor is electrically connected with the controller;

the lower sliding block is provided with a lug and two sliding rails, the lug can be embedded into the opening end of the lower cross rod and is fixed with the second synchronous belt, and the sliding rails can only move back and forth along the grooves of the lower cross rod;

the vertical rod is of a hollow structure and is provided with an opening end, and two side surfaces of the vertical rod are provided with grooves;

the vertical power drive assembly comprises: the fifth synchronous belt pulley and the sixth synchronous belt pulley are respectively and rotatably fixed at two ends in the vertical rod;

a third timing belt wound around the fifth timing pulley and the sixth timing pulley;

the shell of the third motor is fixed with the vertical rod, the rotating shaft of the third motor is fixed with the central shaft of the fifth synchronous belt pulley or the sixth synchronous belt pulley, and the third motor is electrically connected with the controller;

the vertical sliding block is provided with a convex block and two sliding rails, the convex block can be embedded into the opening end of the vertical rod and is fixed with the third synchronous belt, and the sliding rails can only move back and forth along the grooves of the vertical rod.

Further, the unloading assembly comprises:

a first decelerator;

the shell of the turnover motor is fixed with the shell of the first speed reducer, the rotating shaft of the turnover motor is fixed with the input shaft of the first speed reducer, and the turnover motor is electrically connected with the controller;

the overturning bracket is fixed with an output shaft of the first speed reducer;

the overturning plate is fixed with the overturning bracket and can be used for containing goods;

the shell of the second speed reducer is fixed with the unloading frame, and the unloading frame is fixed with the vertical sliding block;

the shell of the swing motor is fixed with the shell of the second speed reducer, the rotating shaft of the swing motor is fixed with the input shaft of the second speed reducer, and the swing motor is electrically connected with the controller;

one end of the swinging rod is fixed with the output shaft of the second speed reducer, and the other end of the swinging rod is fixed with the shell of the first speed reducer;

the rotation of the swing motor can drive the turnover disc filled with goods to swing from the outside of the goods shelf to the upper part of a preset goods box, and the rotation of the turnover motor can unload the goods in the goods box.

Further, the upper movable joint or the lower movable joint comprises:

the adjusting plate is provided with an adjusting hole, and one end of the adjusting plate is fixed with the upper sliding block or the lower sliding block;

the adjusting column is provided with a circular groove on the circumferential surface, the adjusting hole is sleeved on the circular groove and can rotate by taking the adjusting column as the center, and the adjusting column is fixed with the vertical rod.

Further, the upper movable joint or the lower movable joint further comprises:

the flexible isolation column is provided with a circular ring cavity and a through hole, the flexible isolation column is embedded into the circular ring groove of the adjusting column, the adjusting hole is embedded into the circular ring cavity, and the adjusting plate and the adjusting column can be isolated by the flexible isolation column.

Furthermore, the adjusting hole of at least one adjusting plate in the upper movable joint or the lower movable joint is a long hole, and the adjusting column can move up and down in the long hole.

Furthermore, the left vertical rod and the right vertical rod are respectively provided with two rods, the upper support and the lower support are both in a frame shape, two ends of the upper cross rod are respectively fixed at two ends of the frame shape of the upper support, and two ends of the lower cross rod are respectively fixed at two ends of the frame shape of the lower support.

Compared with the prior art, the invention has the advantages that: the whole structure can be reduced to be not more than one fourth of the volume under the working state after being folded; in the folding process, the assembly and disassembly can be completed only by disassembling and assembling the screw of the locking device, and the problems of how to disassemble and assemble, error in the assembling process and the like are not known by a user; in addition, the movable joint has the advantage of long service life.

The invention has the advantages of convenient assembly and disassembly, greatly reduced packaging and transportation cost and long service life.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural view in the folding process of the present invention.

Fig. 3 is a schematic view of the movable joint and the locking device of the invention.

Fig. 4 is a schematic structural diagram related to the movable joint of the invention.

Fig. 5 is a schematic structural view after the folding of the present invention.

Fig. 6 is a schematic perspective view of the folded structure of the present invention.

Fig. 7 is a schematic view of the structure of the present invention in relation to a shelf.

Fig. 8 is a schematic structural view of the upper cross bar and vertical bar connection of the present invention.

FIG. 9 is a schematic view of a state of the unloader assembly of the present invention.

FIG. 10 is a schematic view of another state of the unloading assembly of the present invention.

Fig. 11 is a schematic structural view of an upper movable joint and a lower movable joint of the present invention.

Fig. 12 is a partial cross-sectional view of an upper movable joint of the present invention.

FIG. 13 is a schematic structural view of the upper and lower power drive assemblies of the present invention.

Detailed Description

The invention will now be further described with reference to the accompanying drawings in which:

as shown in fig. 1, 2, 5 and 6, a foldable discharge device comprising:

the folding machine comprises a frame 1, a folding mechanism and a folding mechanism, wherein the frame 1 is provided with an upper bracket 11, a lower bracket 13, at least one left upright 12 and at least one right upright 14, the left upright 12 and the right upright 14 are fixed between the upper bracket 11 and the lower bracket 13, and the left upright 12 and the right upright 14 can be folded, so that the height of the folded frame 1 can be reduced; in this embodiment, in order to improve the stability, two left vertical rods 12 and two right vertical rods 14 are selected; the upper bracket 11 and the lower bracket 13 are both frame-shaped; in order to unload larger goods, the spacing distance between the two left vertical rods 12 is larger than that between the two right vertical rods 14, and when the goods are received, the goods pass through the space between the two left vertical rods 12;

the two ends of the upper cross rod 22 are respectively fixed with the upper bracket 11, specifically, the two ends of the upper cross rod 22 are respectively fixed at the two ends of the frame shape of the upper bracket 11, the upper cross rod 22 is fixed with an upper slide block 21 and an upper power driving assembly 2, and the upper power driving assembly 2 can control the upper slide block 21 to move back and forth only along the upper cross rod 22;

two ends of the lower cross bar 62 are respectively fixed with the lower support 13, specifically, two ends of the lower cross bar 62 are respectively fixed at two ends of the frame shape of the lower support 13, the lower cross bar 62 is arranged in parallel with the upper cross bar 22, the lower cross bar 62 is fixed with a lower slider 61 and a lower power driving assembly, and the lower power driving assembly can control the lower slider 61 to move back and forth only along the lower cross bar 62;

the top of the vertical rod 31 is fixed with the upper sliding block 21 through the upper movable joint, the bottom of the vertical rod 31 is fixed with the lower sliding block 61 through the lower movable joint, the vertical rod 31 is fixedly provided with a vertical sliding block 32 and a vertical power driving assembly, the vertical power driving assembly can control the vertical sliding block 32 to only move up and down along the vertical rod 31, and the vertical rod 31 can be obliquely arranged after the rack 1 is folded;

the unloading assembly is fixed on the vertical slide block 32, can receive the goods at the preset position and can unload the goods at the preset position of the shelf 5 at one side of the frame 1;

during the unloading process, the upper slider 21 and the lower slider 61 move synchronously in the same direction, and during the folding process, the upper slider 21 and the lower slider 61 move in opposite directions.

And the controller is fixed on the rack 1 and is electrically connected with motors in the upper power driving assembly 2, the lower power driving assembly, the vertical power driving assembly and the unloading assembly.

The invention has the obvious advantage that the vertical rod 31 can be obliquely arranged without being disassembled due to the movable joint in the folding process.

Further, the left vertical rod 12 is composed of a first long rod 120, a second long rod 121, a third long rod 122 and a fourth long rod 123 which are sequentially arranged, the right vertical rod 14 is composed of a fifth long rod 140, a sixth long rod 141, a seventh long rod 142 and an eighth long rod 143 which are sequentially arranged, two adjacent long rods are hinged through the movable joints 15, each movable joint 15 is provided with a locking device 16, and the locking device 16 can control the movable joint 15 to move or not move; after the frame 1 is folded, the second long rod 121 and the third long rod 122 can be folded into a parallel close state, and the sixth long rod 141 and the seventh long rod 142 can be folded into a parallel close state; the left vertical rod 12 and the right vertical rod 14 are symmetrically arranged, the second long rod 121 and the third long rod 122 are folded towards the center direction of the machine frame 1, and the sixth long rod 141 and the seventh long rod 142 are also folded;

further, as shown in fig. 3 and 4, the movable joint 15 includes:

the locking device comprises two L-shaped plates, wherein one ends of the two L-shaped plates are hinged together, the other ends of the two L-shaped plates are respectively fixed with two long rods, one end of a locking device 16 is fixed with one long rod, and the other end of the locking device can be fixed with the other long rod through more than two screws only when the two long rods are positioned at the same straight line position, so that a rigid structure is formed;

and an L-shaped plate can be replaced by a common door hinge, so that the cost is further reduced.

It should be noted that, in the embodiment of the present invention, the left vertical rod 12 and the right vertical rod 14 are both rectangular tubes, the locking device 16 is a structure with a U-shaped cross section, the opening end of the U-shaped cross section facilitates the movement of the rectangular tubes when being folded, and meanwhile, the structural strength of the U-shaped cross section is relatively good.

Further, as shown in fig. 7, the upper cross bar 22, which is a hollow structure, is provided with an open end 83 at the upper cross bar 22, and two sides of the upper cross bar 22 are provided with grooves 87;

the upper power drive assembly 2 includes: a first timing pulley 86 and a second timing pulley which are rotatably fixed at both ends in the upper rail 22, respectively;

a first timing belt 85 wound around the first timing pulley 86 and the second timing pulley;

a first motor 81, the shell of which is fixed with the upper cross bar 22, the rotating shaft of which is fixed with the central shaft of the first synchronous pulley 86 or the second synchronous pulley, the first motor 81 is electrically connected with the controller;

the upper sliding block 21 is provided with a lug 84 and two sliding rails 82, the lug 84 can be embedded into the open end 83 of the upper cross bar 22 and fixed with a first synchronous belt 85, and the sliding rails 82 can only move back and forth along the grooves 87 of the upper cross bar 22;

the lower cross bar 62 is of a hollow structure, the lower cross bar 62 is provided with an opening end, and two side faces of the lower cross bar 62 are provided with grooves;

the lower power drive assembly includes: third and fourth timing pulleys rotatably fixed at both ends in the lower cross bar 62, respectively;

the shell of the second motor is fixed with the lower cross bar 62, the rotating shaft of the second motor is fixed with the central shaft of the third synchronous pulley or the fourth synchronous pulley, and the second motor is electrically connected with the controller;

the lower sliding block 61 is provided with a lug and two sliding rails, the lug can be embedded into the open end of the lower cross rod 62 and is fixed with the second synchronous belt, and the sliding rails can only move back and forth along the grooves of the lower cross rod 62;

the vertical rod 31 is of a hollow structure, the vertical rod 31 is provided with an opening end, and two side faces of the vertical rod 31 are provided with grooves;

the vertical power drive assembly includes: a fifth synchronous pulley and a sixth synchronous pulley which are respectively and rotatably fixed at two ends in the vertical rod 31;

a shell of the third motor is fixed with the vertical rod 31, a rotating shaft of the third motor is fixed with a central shaft of the fifth synchronous belt pulley or the sixth synchronous belt pulley, and the third motor is electrically connected with the controller;

the vertical sliding block 32 is provided with a convex block and two sliding rails, the convex block can be embedded into the opening end of the vertical rod 31 and fixed with the third synchronous belt, and the sliding rails can only move back and forth along the grooves of the vertical rod 31.

It should be noted that the upper cross bar 22, the upper power driving assembly 2 and the upper slide block 21 form an independent first driving unit, the lower cross bar 62, the lower power driving assembly and the lower slide block 61 form an independent second driving unit, and the vertical bar 31, the vertical power driving assembly and the vertical slide block 32 form an independent third driving unit, which have the same structure, thereby greatly simplifying the structure and reducing the cost.

Further, as shown in fig. 8, 9 and 10, the unloading assembly includes:

a first decelerator 44;

a turnover motor 43, the shell of which is fixed with the shell of the first speed reducer 44, the rotating shaft of which is fixed with the input shaft of the first speed reducer 44, and the turnover motor 43 is electrically connected with the controller;

a roll-over bracket 42 fixed to an output shaft of the first reduction gear 44;

a turnover plate 40 fixed with a turnover bracket 42, wherein the turnover plate 40 can be used for containing goods;

a second reducer 46, the housing of which is fixed to the unloading carriage 41, the unloading carriage 41 being fixed to the vertical slide 32;

a swing motor 47, the shell of which is fixed with the shell of the second reducer 46, the rotating shaft of which is fixed with the input shaft of the second reducer 46, the swing motor 47 being electrically connected with the controller;

a swing lever 45 having one end fixed to an output shaft of the second reduction gear 46 and the other end fixed to a casing of the first reduction gear 44;

the swing motor 47 is rotated to swing the turnover disk 40 loaded with goods from the outside of the racks 2 to above a predetermined container 51, and the turnover motor 43 is rotated to unload the goods into the predetermined container 51.

The turnover table 40 of the invention can pass between the two left vertical rods 12, move to the outside of the frame 1 to receive goods, such as goods unloaded by a robot, and then convey the goods to the upper part of a preset goods box 51 on the goods shelf 2 for unloading, only one goods shelf 2 is shown in figure 7, in practical application, as the turnover table 40 can turn for unloading after rotating for plus 90 degrees or minus 90 degrees along the horizontal plane, one goods shelf 2 can be respectively placed on two sides of the frame 1, and the goods box 51 can be detached, thereby facilitating the fetching of the goods.

Further, as shown in fig. 11 and 12, the upper movable joint or the lower movable joint includes:

an adjusting plate 71 provided with an adjusting hole 711, wherein one end of the adjusting plate 71 is fixed to the upper slider 21 or the lower slider 61;

the adjusting column 72 has a circular groove on its circumferential surface, the adjusting hole 711 is sleeved on the circular groove and can rotate around the adjusting column 72, and the adjusting column 72 is fixed with the vertical rod 31.

Further, the upper movable joint or the lower movable joint further comprises:

the flexible isolation column 73 is provided with a circular ring cavity and a through hole, the flexible isolation column 73 is embedded into a circular ring groove of the adjusting column 72, the adjusting hole 711 of the adjusting plate 71 is embedded into the circular ring cavity of the flexible isolation column 73, the flexible isolation column 73 can isolate the adjusting plate 71 from the adjusting column 72, the flexible isolation column 73 is provided and can effectively protect the vertical rod 31, the upper sliding block 21 and the lower sliding block 61, generally, the flexible isolation column 73 belongs to a wearing part and can be replaced, the flexible isolation column 73 can be made of plastics, in the embodiment, the adjusting column 72 is divided into two parts by taking the circular ring groove as a boundary, and the adjusting plate 71 is conveniently installed by fixing through screws.

The adjusting hole 711 of at least one adjusting plate 71 in the upper movable joint or the lower movable joint is a long hole, and the adjusting column 72 can move up and down in the long hole.

It should be noted that, due to the deformation, installation error, synchronization error, etc. of the lower cross bar 62 and the vertical bar 31 of the upper cross bar 22, the vertical bar 31 cannot always keep parallel movement, the vertical bar 31 has a slight rotation angle with respect to the upper cross bar 22 and/or the lower cross bar 62, and the deflection angle is always changed, when the length of the vertical bar 31 is longer, the generated torque is very large, if there is no upper movable joint and lower movable joint, the torque easily damages the rigid coupling parts of the vertical bar 31 with the upper cross bar 22 and the lower cross bar 62, in addition, the existence of the deflection angle makes the length of the connecting point between the two ends of the vertical bar 31 and the upper cross bar 22 and the lower cross bar 62 change, there is a tendency of upper movable joint or lower movable joint, the vertical bar 31 can adaptively rotate an angle and move up and down for a certain distance with respect to the upper cross bar 22 and/or the lower cross bar 62, the torque can be eliminated, so that the slide block and the like can be protected from being damaged.

It should also be noted that when the frame 1 needs to be folded, the upper movable joint or the lower movable joint is provided, and the vertical rod 31 is convenient to be arranged obliquely.

The motor of the invention can be a servo motor, and the controller can accurately control the operation of the motor according to instructions, thereby controlling the accurate positioning and loading and unloading actions of the turnover disc 40, and particularly can be realized by software.

Claims

1. A foldable discharge device, characterized in that it comprises:

the folding machine comprises a rack (1) and a folding mechanism, wherein the rack (1) is provided with an upper support (11), a lower support (13), at least one left upright (12) and at least one right upright (14), the left upright (12) and the right upright (14) are fixed between the upper support (11) and the lower support (13), and the left upright (12) and the right upright (14) can be folded, so that the height of the folded rack (1) can be reduced;

the two ends of the upper cross rod (22) are respectively fixed with the upper support (11), an upper sliding block (21) and an upper power driving assembly (2) are fixed on the upper cross rod (22), and the upper power driving assembly (2) can control the upper sliding block (21) to move back and forth only along the upper cross rod (22);

the two ends of the lower cross rod (62) are respectively fixed with the lower support (13), the lower cross rod (62) and the upper cross rod (22) are arranged in parallel, a lower sliding block (61) and a lower power driving assembly are fixed on the lower cross rod (62), and the lower power driving assembly can control the lower sliding block (61) to move back and forth only along the lower cross rod (62);

the top of the vertical rod (31) is fixed with the upper sliding block (21) through the upper movable joint, the bottom of the vertical rod (31) is fixed with the lower sliding block (61) through the lower movable joint, the vertical sliding block (32) and the vertical power driving assembly are fixed on the vertical rod (31), the vertical power driving assembly can control the vertical sliding block (32) to only move up and down along the vertical rod (31), and the vertical rod (31) can be obliquely arranged after the rack (1) is folded;

the unloading assembly is fixed on the vertical sliding block (32) and can bear the goods at a preset position and unload the goods at the preset position of a shelf (5) on one side of the rack (1);

and the controller is fixed on the rack (1) and is electrically connected with motors in the upper power driving assembly (2), the lower power driving assembly, the vertical power driving assembly and the unloading assembly.

2. A foldable unloading device as claimed in claim 1, c h a r a c t e r i z e d in that the left upright (12) consists of a first (120), a second (121), a third (122) and a fourth (123) rod arranged in sequence, the right upright (14) consists of a fifth (140), a sixth (141), a seventh (142) and an eighth (143) rod arranged in sequence, two adjacent rods are hinged by means of a movable joint (15), and each movable joint (15) is provided with a locking device (16), which locking device (16) controls the movable joint (15) to move or not move.

3. A foldable unloading device as claimed in claim 2, c h a r a c t e r i z e d in that after the frame (1) is folded, the second (121) and third (122) elongate rods are foldable into a parallel closed position, and the sixth (141) and seventh (142) elongate rods are foldable into a parallel closed position.

4. A foldable discharge device according to claim 2 or 3, wherein said movable joint (15) comprises:

and the L-shaped plates are provided with two plates, one ends of the two L-shaped plates are hinged together, the other ends of the two L-shaped plates are respectively fixed with the two long rods, one end of the locking device (16) is fixed with one long rod, and the other end of the locking device can be fixed with the other long rod through a screw only when the two long rods are positioned at the same straight line position.

5. A foldable discharge device according to any of claims 1-4, wherein:

the upper cross rod (22) is of a hollow structure, an opening end (83) is arranged on the upper cross rod (22), and grooves (87) are formed in two side faces of the upper cross rod (22);

the upper power driving assembly (2) comprises: a first timing pulley (86) and a second timing pulley rotatably fixed at both ends in the upper cross bar (22), respectively;

a first timing belt (85) wound around the first timing pulley (86) and the second timing pulley;

the shell of the first motor (81) is fixed with the upper cross rod (22), the rotating shaft of the first motor is fixed with the central shaft of the first synchronous pulley (86) or the second synchronous pulley, and the first motor (81) is electrically connected with the controller;

the upper sliding block (21) is provided with a convex block (84) and two sliding rails (82), the convex block (84) can be embedded into the opening end (83) of the upper cross rod (22) and is fixed with the first synchronous belt (85), and the sliding rails (82) can only move back and forth along the grooves (87) of the upper cross rod (22);

the lower cross rod (62) is of a hollow structure, the lower cross rod (62) is provided with an opening end, and two side faces of the lower cross rod (62) are provided with grooves;

the lower power drive assembly comprises: a third synchronous pulley and a fourth synchronous pulley which are respectively and rotatably fixed at two ends in the lower cross bar (62);

the shell of the second motor is fixed with the lower cross bar (62), the rotating shaft of the second motor is fixed with the central shaft of the third synchronous pulley or the fourth synchronous pulley, and the second motor is electrically connected with the controller;

the lower sliding block (61) is provided with a lug and two sliding rails, the lug can be embedded into the open end of the lower cross rod (62) and is fixed with the second synchronous belt, and the sliding rails can only move back and forth along the grooves of the lower cross rod (62);

the vertical rod (31) is of a hollow structure, the vertical rod (31) is provided with an opening end, and two side faces of the vertical rod (31) are provided with grooves;

the vertical power drive assembly comprises: a fifth synchronous belt wheel and a sixth synchronous belt wheel which are respectively and rotatably fixed at two ends in the vertical rod (31);

a shell of the third motor is fixed with the vertical rod (31), a rotating shaft of the third motor is fixed with a central shaft of a fifth synchronous belt wheel or a sixth synchronous belt wheel, and the third motor is electrically connected with the controller;

the vertical sliding block (32) is provided with a convex block and two sliding rails, the convex block can be embedded into the opening end of the vertical rod (31) and fixed with the third synchronous belt, and the sliding rails can only move back and forth along the grooves of the vertical rod (31).

6. A foldable discharge device according to any of claims 1-4, wherein said discharge assembly comprises:

a first speed reducer (44);

the shell of the overturning motor (43) is fixed with the shell of the first speed reducer (44), the rotating shaft of the overturning motor is fixed with the input shaft of the first speed reducer (44), and the overturning motor (43) is electrically connected with the controller;

a roll-over bracket (42) fixed to an output shaft of the first reduction gear (44);

the overturning plate (40) is fixed with the overturning bracket (42), and the overturning plate (40) can be used for containing goods;

a second reducer (46), the shell of which is fixed with the unloading frame (41), and the unloading frame (41) is fixed with the vertical slide block (32);

the shell of the swing motor (47) is fixed with the shell of the second speed reducer (46), the rotating shaft of the swing motor is fixed with the input shaft of the second speed reducer (46), and the swing motor (47) is electrically connected with the controller;

a swing lever (45) having one end fixed to an output shaft of the second reduction gear (46) and the other end fixed to a housing of the first reduction gear (44);

the swing motor (47) can drive the turnover disc (40) filled with goods to swing from the outside of the goods shelf (2) to the upper part of a preset goods box (51) through rotation, and the turnover motor (43) can unload the goods in the goods box (51) through rotation.

7. A foldable discharge device according to any of claims 1-4, wherein said upper or lower movable joint comprises:

the adjusting plate (71) is provided with an adjusting hole (711), and one end of the adjusting plate (71) is fixed with the upper sliding block (21) or the lower sliding block (61);

the adjusting column (72) is provided with a circular groove on the circumferential surface, the adjusting hole (711) is sleeved on the circular groove and can rotate by taking the adjusting column (72) as the center, and the adjusting column (72) is fixed with the vertical rod (31).

8. A foldable discharge device according to claim 7, wherein said upper or lower movable joint further comprises:

the flexible isolation column (73) is provided with a circular ring cavity and a through hole, the flexible isolation column (73) is embedded into the circular ring groove of the adjusting column (72), the adjusting hole (711) is embedded into the circular ring cavity, and the flexible isolation column (73) can isolate the adjusting plate (71) and the adjusting column (72).

9. A foldable discharge device according to any of the claims 7, wherein the adjustment hole (711) of at least one adjustment plate (71) of said upper or lower movable joint is an elongated hole, and said adjustment column (72) is movable up and down in the elongated hole.

10. A foldable unloading device as claimed in any one of claims 1-4, wherein there are two left upright (12) and two right upright (14), respectively, the upper support (11) and the lower support (13) are both frame-shaped, the two ends of the upper cross bar (22) are fixed to the two ends of the frame-shape of the upper support (11), respectively, and the two ends of the lower cross bar (62) are fixed to the two ends of the frame-shape of the lower support (13), respectively.